
This year, 88 companies delisted or transferred their primary listing away from the London Stock Exchange. Only 18 new companies listed. This, according to FT, marks the biggest net outflow of companies since the financial crisis.
A lot of these companies are, of course, moving their listings over to the US. The New York Stock Exchange and the Nasdaq are, by far, the two largest stock exchanges in the world by market cap. And so many companies believe that they'll generally have a better time being listed over there -- better access to capital, greater liquidity, etc.
This is not a new trend. Last year, the FT also called out the London Stock Exchange as being the European stock exchange with the greatest risk of seeing companies depart for the US. Here's what's been happening since the financial crisis:

